<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>公众号：前端学不动</title>
  <style>
    * {
      padding: 0;
      margin: 0;
    }
    html, body { height: 100% }
    body {
      background: black;
      display: flex;
      align-items: center;
      justify-content: center
    }
    .ul {
      position: relative;
      width: 100px;
      height: 50px;
      padding: 10px;
      list-style: none;
      overflow: hidden
    }
    .ul:first-of-type {
      padding-bottom: 0
    }
    .ul:last-of-type {
      padding-top: 0;
      /* margin-top: -2px; */
      /* animation: container-move .1s 1.2s forwards */
    }
    .harmony {
      position: absolute;
      top: 10px;
      left: 10px;
      width: 70px;
      height: 70px;
      border-radius: 50%;
      border: 15px solid #eee;
      /* transform: translateY(50%); */
      box-shadow: 0 0 6px white, inset 0 0 6px white;
      animation: move 1.2s forwards
    }
    .ul:last-of-type > .harmony {
      top: 0px;
      bottom: 10px;
      transform: translateY(-50%);
      filter: url(#blur)
    }
  </style>
</head>
<body>
  <div class="container">
    <ul class="ul">
      <li class="harmony"></li>
    </ul>
    <ul class="ul">
      <li class="harmony"></li>
    </ul>
  </div>
</body>
</html>